Firing-trigger mechanism for firearms



A ril 20,1926. 1,581,763

1 cfiNzwTou FIRING TRIGGER MECHANISM FOR FIREARMS Filed June 27, 1924 mgr-at "WWI- Fatented Apr. 210, 1926.

CHAR-LES NEVI'TON', OF BUFFALO, NEW YORK.

FIRING-TRIGGER MECHANISM FOR FIREARMS.

Application filed June 27,

To all whom it may concern:

Be it known that 1, CHARLES NEWTON, a citizen of the United States, residing at Buffalo, in'the county of Erie and State of New York, have invented new and useful Improvements in Firing-Trigger Mechanism for F irearms, of which the following is a specification.

'This invention relates to a firing trigger mechanism and more particularly to that class of firearms in which both a firing or releasing trigger is employed for operating the sear directly and also a firing hammer whereby the scar may be operated directly by a hammer blow upon pulling the main or ed, the main, releasing or firing trigger was located in front of a rear or set finger piece operating the firing hammer which necessitated reaching with the forefinger forward- 1y past the trigger of the firing hammer in order to properly engage the front or firing triggerr This is objectionable inasmuch as the knuckle of the second finger. during this operation of the firing trigger by the forefinger is brought close to the rear end of the guard where it is liable to be injured by the recoil of the firearm, particularly in the event of a heavy recoil of the same. This old form of double trigger mechanism was also so constructed that both the main or firing trigger and the finger piece of the firing hammer are operated by a rearward 31111 or movement of the fin 'er )ieces which necessitated a separate finger space within the guard for each of these fingerpieces, thereby necessitating making the guard unduly long. Furthermore, the trigger mechanisms of this character as heretofore con-. structed necessitated the employment of an unduly large number of parts, increased the cost of manufacture and was liable to derangement of parts.

ranged in front of the firing trigger and the firing hammer is operated by a forward movement of its finger-piece and the firing trigger 1s operated by a rearward movement of its fingerpiece, so that but a single finger or thumb space need be employed between 1924. Serial No. 722,727.

the two fingerpieces which permits of reducing the length of the guard accordingly and produces a more compact construction. My invention has the further object to simplify the construction of the firing mechanism so as to reduce the number of parts, to reduce the number of machine operations for producing the same and to reduce the liability of any foreign matter entering the interior parts of the trigger mechanism and interfering with the action of the same.

In the accompanying drawings: Figure 1 is a fragmentary side elevation, partly in section, of a breech loading firearm equipped with my improvements and showing the trigger mechanism in its normal or uncooked position. Figure 2 is a similar view showing the position of the parts when the triggcr mechanism is cooked and the firearm is ready for firing. .Figure 3 is a similar View showing the position of the parts when the firing trigger has been pulled for releasing the. sear from the head of the firing bolt. Figure 4 is a fragmentary detached top plan view of the lower or guard section of the frame and the parts mounted thereon, this view being taken substantially on line 44, Fig. 2, looking downwardly. Figure 5 is a fragmentary vertical transverse section taken on the correspondingly numbered line in Fig. 1.

Similar characters of reference indicate corresponding parts throughout the several news;

Although my improved firing or trigger mechanism may be organized to suit various forms of firearms, that shown in the drawings, as an example suitable for receiving my improvements, comprises a wooden stock 1, an upper metal frame section 2 secured to the upper part of the stock, a lower metal frame section 3 securedto the lower part of the stock, a longitudinally movable firing pin 4 guided in the upper frame section and provided with a firing head 5 having a forwardly facing bent or shoulder 6 on its underside, and a vertically swinging sear 7 arranged in a recess or chamber 8 in the stock between the upper and lower frame sections and pivoted at its front end to the upper frame section by means of a transverse pin 9. This sear is provided at its rear end with a nose 10 which projects upwardly through an opening or slot- 11 in the upper frame section in such position that its rear side may be engaged with the bent of the firing head. The sear is yieldingly held in its operative position in which its nose is arranged in the path of the bent on the firing head by means of a spring 12 operatitng on a rearwardly projecting arm 13 of the sear.

My improved firing or trigger mechanism which is associated with the above described parts is preferably constructed as follows:

Arranged within the longitudinal slot 11 in the upper metal section 2, .is the sear 7' which is pivoted by means of the horizontal transverse pin 9. The lower frame section is provided with a longitudinal slot- 14, which opens into the lower end of the recess 8 in the stock and upon the upper side of this frame section and arranged along opposite sides of its slot are two longitudinal. flanges 15, 15, which are formed integrally with thelower frame section. On its underside the lower frame section is provided with a downwardly projecting guard 16 which extends from the front to the rear end of the slot in this frame section and is formed integrally therewith.

' WVithin the slot 14 and the guard of the lower frame section and the recess 8 .of the stock are arranged the main, releasing or transverse pin 19, connecting the central part of this trigger with the rear parts of the flanges 15. Below its pivot the firing tri er is provided with a downwardly pro e ect ng fingerp ece 20, which is arranged within the rearpart of the guard, and above I the pivot the same is provided with a trip arm, 21, which is. adapted to engage 1 its front side with the rear side of the lower rear sear arm 22. Upon'moving the fingerpiece of the firing trigger rearwardly, its upper trip arm engages the lower rear sear arm, depressing the rear end of the sear, in opposition to the spring 12, and the nose of the sear is disengaged from the bent of the firing head and thereby permits the firing bolt to be projected forwardly in the usual manner for discharging the firearm. The 'firing trigger is yieldingly held in position in which its fingerpieceis in the forward position and its trip arm is in its rearward position by meansof a spring device, which comprises a transverse finger 23, which engages with an upward facing shoulder 24 formed on the rear trigger. This return movement of the firing trigger .under the action of the spring device may be adjusted by means of' a stop screw 25, ar-

ranged in'the lower frame section, as shown in Figs. 1, 2 and 3. On its front side, and at a point below its pivot, the firing trigger is provided with a forwardly and down wardly projecting nose 26, the upper side of which forms a cam-shaped setting face 27 and the lower side of which forms an abrupt catch face 28.

The firing hammer is arranged with its central part in the front part of the slot 14 of the lower frame section, and is pivoted thereon to swing vertically by means of a horizontal transverse pir 29 passing through the central part of this firing hammer and the adjacent parts of the'fianges 15. This firing hammer is provided with a downward ly projecting fingerpiece 30 which is arranged within the front part of the guard and the same is also provided with an upwardly projecting trip arm 31; which is adaptedto engage its front side with the rear side of the front lower arm 32 of the sear. Between its upper and lower ends the firing hammer is provided on its rear side with a rcarwardly projecting nose 33, the underside of which forms a cam-shaped setting face 34;, while its upper side forms an abrupt catch face or shoulder 35, which faces are adapted to engage with the cam and catch faces of the firing trigger forsetting the firearn'i' preparatory to discharging the same.

When free, the firing hammer is turned by means of a spring device in the direction for moving. its fingerpiece rearwardly and its trip arm forwardly with a'hammer blow against the lower front. arm of the sear. The spring device is so'organize'd that it forms part of the springdevice which retracts the firingtrigger, and n its preferred form the same comprises two coils 36, which are mounted on oppos te endsfof the pivot pin 29 outside the frame fianges'15, as Sl1OW11 in Figs. 1, 2, 3, 4; and 5.1 T he forward movement of the upper spring loop 37 ,is'limited by. means of a pair of upright stop lugs 38, 38, which areintegral. with the frame flanges 15, and which are provided on their rear sides with vertical stop faces 39 which are agapted. to be engaged by the spring loop 8 In the normal, uiicocked orinoperative position of the firing hammer mechanism, the

firearm itself being cocked, as shown. in Fig.

1, the firing bolt is in its rear position, the sear is elevated with its nose in front-of the .bent holding back the firing bolt, the firing trigger is turned by the spring device so that its fingerpiece is in its forward position, and the firing hammer is turnedby its spring device so that its finger pieceis in its rearward position, and the spring loop,

is resting against the upright stop lugs with the upper trip arm almost but not quite in contact with the lower front sear arm. vFor V the purpose of setting the firing hammer, preparatory to firing the firearm witli this under compression. \Vith the parts in this ")OSltlOD a sli ht rearward )ull u )on the i 7 o fingerpiece of the firing trigger will disen gage the rearwardly projecting nose of the firing hammer from the forward projecting nose of the firing trigger, which permits the spring loop, then under compression, to throw the trip arm of the firing hammer violently forward, its front face striking the rear face of the lower front sear arm, and the impact of the blow will drive the lower sear arm forward, thus drawing the nose of the sear from its engagement with the bent of the firing head and permitting the firing spring to throw the firing pin forward striking the primer of the cartridge and thus discharging the firearm. The forward movement of the trip arm of the firing hammer is such as to permit it to pass its point of rest, thus its inertia follows up the receding lower front sear arm and makes the blow effective, although the spring loop is checked by the vertical rear faces of the upright stop lugs.

If desired, the firing hammer device may be ignored, as when a heavier pull is desired, or when there is not time to set the firing hammer, and the firearm be fired by a direct rearward pull f the firing trigger. In such case the rearward pull upon the fingerpiece of the firing trigger carries the trip arm of that trigger forward where it engages the lower rear sear arm and a con tinuation of the pull forces that sear arm downward, thus withdrawing the sear nose from in front of the bent on the firing head and permitting the firing spring to throw forward the firing pin against the primer of the cartridge and explode it.

The extent of the contact between the front nose of the firing trigger and the rear nose of the firing hammer when the mechanism is set, can be regulated by the adjusting screw and as the amount of this engagement controls the amount f force necessary to be applied in order to release the firing hammer. the pull of the trigger may be controlled thereby.

I claim as my invention:

1. A firing mechanism for firearms comprising a firing head having a bent, a scar engaging said bent, a firing trigger operatively related to said scar and having a rearwardly moving fingerpiece, and a firing hammer co-operating with said firing trigger arranged in front of the same and having a forwardly moving fingerpiece.

2. A firing mechanism for firearms comprising a firing head having a bout, a sear engaging said bent, a firing trigger, and a firing hammer located in front of said firing trigger and being operatively associated with said sear for releasing the same from said bent.

3. A firing mechanism for firearms comprising a firing head having a bent, a scar engaging said bent, a firing trigger, a firing hammer mounted in the lower frame section of said firearm in front of said firing trigger and being operatively associated with said sear for releasing the same from said bent.

4. A. firing mechanism for firearms comprising a firing head having a bent, a scar engaging said bent, a firing trigger, a firing hammer mounted in the lower frame section. of said firearm in front of said firing trigger, a finger piece on said firing hammer depending downward within the trigger guard of said firearm for cocking said firing hammer, and said firing hammer being operatively associated with said sear for releasing the same from said bent.

5. A firing mechanism for firearms comprising a firing head having a bent, a scar engaging said bent, a firing trigger, a firing hammer mounted in the lower frame section of said firearm in front of said firing trigger, a finger piece on said firing ham-- mer depending within the trigger guard of said firearm and being integral with said firing hammer for cocking the same, and said firing hammer being opcratively associated with said sear for releasing the same from said bent.

6. A firing mechanism for firearms comprising a firing head having a bent, a scar engaging said bent, a front firing hammer having an upper trip arm engaging said sear, a lower fingerpiece and a catch shoulder on its rear side between its arm and fingerpiece, and a rear firing trigger having an upper trip arm engaging said sear, a lower fingerpiecc and a catch shoulder on its front side between its arm and fingerpiece and adapted to engage the catch shoulder of said front firing hammer.

7 A firing mechanism for firearms comprising a firing head having a bent, a sear engaging said bent, a front firing hammer having an upper trip arm engaging said near, a lower .fii'igerpiece, a catch shoulder on its rear side and a spring shoulder on its rear side, a rear firing trigger having an upper trip arm engaging said sear, a lower fingerpiece, a front catch shoulder engaging with the catch shoulder of the firing hammer, and a rear spring shoulder,

and a spring engaging with the spring shoulders of said firing trigger and said firing hammer and operating, to turn said firing trigger and firing hammerso that the fingerpiece of the firing hammer moves rearwardly and the fingerpiece of the firing trigger moves forwardly.

8. A firing mechanism for firearms com prising a firing head having a bent, a. sear engaging said bent, a front firingrhammer having an upper trip arm engaging said sear and a lower fingcrpieee, a rear firing trigger co-operating with said firing hammer and having an upper trip arm engaging said sear and a lower lingerprising a firing head having a bent, a scar engaging said bent, a vfront firing hammer having an upper trip arm engaging sald sear and a lower fingerpiece, a rear firing trigger co-operating with said firing'han'i- 11101 and having an upper trip arm engaging said sear and a lower fingerpiece, spring means for turning said firingtrigger and firing hammerso that the fingerpiece of the firing hammer moves rearwardly and the fingerpiece of the firing trigger moves-forwardly, and means for adjusting the extent of movement of said firing trigger under the action of said spring means compris ing a screw arranged in rear of the firing trigger and engaging the latter.

10. A firing mechanism for firearms comprising afiring head having a bent, asear engaging said bent, a front firing hammer having an npperitrip ,arm engagingsaid vsear and a lower fingerpiece, a rear firing trigger co-operating with said firing hammer and having an upper trip arm engaging said sear and a lower fingerpiece, spring means for. turning said firing trigger and firing hammer so that the fingerpiece of the firing'hammer moves rearwardly and'the fingerpieee of the firing trigger moves forwardly, means for adjustingthe vextent of movement of said firing trigger under the action of said spring means, and aframe 011 which said firing trigger and firing hammer are pivoted and which has a single slot containing both said trigger and said hammer.

. CHARLES 'NEVTON. 

